Aik-heatiwg stove



H. G. CLARK.

Heating Stove.

No. 5,704. Patented Aug. 10, 1848.

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5 new, and greatly enhances the value of such UNITED STATES PATENT OFFICE.

HENRY G. CLARK, OF BOSTON, MASSACHUSETTS.

AIR-HEATING STOVE.

Specification of Letters Patent No. 5,704, dated August 10, 1848; Antedated February 10, 1848.

T 0 all whom it may concern:

Be it known that I, HENRY G. CLARK, of Boston, in the county of Suffolk and State of Massachusetts, doctor of medicine, have invented certain new and useful Improvements in Double-Cylinder Hot-Air Stoves, and that the following description, taken in connection with the accompanying drawings, hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my said improvement, by which my invention may be distinguished from others of a similar class, together with such parts or combinations as I claim and desire to have secured to me by Letters Patent.

The figures of the accompanying plate of drawings represent my improvements.

Figure 1, is a front elevation. Fig. 2 is a horizontal section taken in the plane of the line AB, Fig. 1, the cap a a Fig. 3 being removed. Said Fig. 3 is a vertical section taken in the plane of the line CD, Fig. 2, and Fig. 4 is a horizontal section taken in the plane of the line FF Fig. 3.

My design in devising my improvements above stated has been to providev a stove which shall be suflicient for ventilating purposes, by introducing a large supply of warm air into a hall or apartment, and consequent-1y permitting an equally large discharge -of foul air, and thereby make a frequent change of the whole atmosphere of the room.

The principle or mode of construction which I have adopted for the main portion of my improved stove does not differ essentially from other double cylindrical stoves which have been used heretofore, saving in the proportions of the several parts, espe-,

cially the air chamber, which is much larger than any other; but I have added to and combined with the stove a conical distributer or regulator, which combination is entirely stoves.

In Fig. 3, b b is the fire chamber which is of a cylindrical shape and properly lined with soap stone or fire brick, having a supplying mouth 0 0, near its top, and a coarse grate (Z 03 just over the ash pit e 6. There is a discharging flue h at the back of the fire chamber and an inclosing cap a a, before referred to, on top of which cap the water pan 5 i z' is supported.

f f f f is the be in chamber, which is formed by inclosing the fire-chamber in a sheet or other iron cylinder 9 g g g concentrio with the same, which is nearly or entirely open at the top. The diameter of this cylinder should be, in my judgment, about once and a half that of the fire chamber b b.

k k is the cold air shaft, or channel, which communicates with the external atmosphere and with the hot air chamber f f f f. This shaft may be of any shape but must have an area, in a transverse vertical section, at least equal to that of the base ofthe fire chamber 1) b. It is provided with a valve 1 for regulating the admission of cold air, which valve is operated by an index or register arm m as will be readily understood 'by inspection of Figs. 2, 3, 4.

I now come to the description of the most distinguishing feature of my improvements and upon which I shall rest my claim, that is the suspended conical distributer n a for distributing the hot air produced in the hot air chamber f f f f. This distributer is attached to one end of a chain 0 0, to the other end of which chain a balance weight is appended, the chain passing over a grooved pulley p on the end of the arm 9 q, projecting from the chimney breast 1* r. The distributer n n is hollow, and at its base is of the same diameter as the cylinder 9 g g g, and when the hot air from the chamber f f f f impinges upon the inner side of said distributer, it is made to pass in a direction parallel with the inner face of the distributer and is diffused downward and latmay be made in the shape &c. of the distributers and in the mode of raising and lowering it, which I do not deem it essential to explain in detail, as they are such changes,

as different manufacturers would make accordingto their various tastes and skill, and as I believe that the general idea or device of a regulator (vertically adjustable) which shall operate as a distributer, in combination with such a hot air stove as I have described, as above set forth, is entirely original.

Having thus described my improvements, In testimony that theforegoing is a true I shall state my claim as follows: description of my said improvements I have 10 What I claim as my invention, and desire hereto set my signature this twenty-fifth day to have secured to me by Letters Patent, is of July inthe year 1848.

5 The combination of a vertically adjust- HENRY Gr. CLARK able conical regulator and distributer With Witnesses: the double cylinder hot airstove, all as EZRA L1No0LN,Jr., herein above described. LUTHER BRIGGS, Jr 

